Printing device



May 17, 1932. c. cHlsHoLM PRINTING DEVICE Filed July 26. 1929 3Sheets-Sheet l IIIIHHHIIIHVIIIIIIlllll llllllllllll C. C JHISHOLMPRINTING DEVICE s sheets-sheet 2 Filed July 25. 1929 May 17, 1932. c.cHlsHoLM PRINTING DEVICE 3 Sheets-Sheet 3 Filled July 26. 1929 Ta Gr.16

5mm if Patented May 17, 1932 un.ifire?.n

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' CLIFTON CHSHOLM, OF CLEVELAND, OHIO, ASSIGNOR, BY .ASSGNVIEBTTE7 TOAMERICAN MULTGRAPE CO., OF WILMINGTON, EELAWARE, A COREORATION OFDELAVARE Application filed July 26,

This invention `relates to a printing deice of the :general type whereinthe various printing members, such as embossed strips, aremounted onarotary drum and coact with a suitable platen, especially when such adevice is in a lsimple form adapted for otlice printing. In many suchinstances the printing device is used for listing and other similarpurposes wherein it is desired to replace a small number of the.printing members or embossed strips, to Vbring the form up to date.

In many instances, such as where the device is used for the listing ofnames, for example as in telephone directories wherein the data l isconstantly changing, it is necessary to have the form constructed insuch manner that certain of the printing members may be readily removedand replaced to permit corrections to Vbe made in the form from time totime.

An object of the invention is to provide a simple device whereby a formsheet, especially one comprising a list or other such data may readilybe assembled.

Another object-is to provide an improved printing form adapted to carryline units in the nature of individual printing strips wherein any oneofthe individual strips may' `be readily replaced without necessitatingthe 39 removal of the other strips.

A further object is to provide a simple device wherein raised printingmembers, such as embossed strips maybe mounted on a printing form, insuch Va manner that such strips may readily be removedand replacedwithout disorganizing the continuity'or or-V.

der of the remaining strips.

A further object is to provide a printing I device wherein a form, suchas a list, may be t9 set up composed of printingV members such asembossed strips in column formations. Y In carrying out the invention Iprefer to provide a suitable rotary drum having a removable segmentadapted to carry the print- 5 ing lines, which segment may be embracedby an inking ribbon carried by spools mounted in the drinn, and suchdevice may be adapted to coact with a rotary platen as the drum-isrotated. The device accordingly parta-kes of the character of amultigraph printing :rialNfrriveV nnvrcn l 192e. seri'ai NQ. 351,162.

machine, except that instead of mounting .the

printing strips directly on the segment I- mount each printing strip onVan-individual holder which in turn is adapted toV be supported andlocked in position on the segment. The individual'holders and theirrespective printingstrips may be divided into column format-ion by meansof flat strips of less'height than theholders, which flat strips extendarcuately about the surface of the segment and are ,provided witho-verhanging ribs adapted Ato engage the printing fstrip holders'andretain them in position on the segmentjf By'this means I am able tobuild upon the segment at-abular printing form accurately aligned, aswell as one in which anyone or more of the individual printing strips orvlines anay readily be removed without'V necessitating ythe. removal or'displacement of th-eremaining strips. y

The features above referredto and other objects of my'inve'nt-ion lwill'be hereinafter more :fully explained and becomemore fullyy apparentfromthe following description of the Venflbodiment illustrated in thedrawings. The essential characteristics thereof are summarized Vin the`Vclaims.

In the drawings, Figll is aside elevation of a printing device'fcarryingmy preferred form of printing strip and holdertherefor; Fig. 2 is across section of the same as indicated'byV the line "2-2 on Fig'l; Fig.3 is-a radialsectionindicated by thelines 3 3 on f Fig Figa isa radialsection lof the segment illustrating retainingmeans vfor the printingstrip holders, the position of whichxis indicated bythe lines 4 4 ofFig. 2; Fig. '5 is aperspective on an enlarged scale of a. printingstrip with its'associ'ated holder, a portion of theprinting'strip beingbroken away; Fig. V6 is a vertical crosssection indicated by the line6-6 in Fig. 5.; Fig. Z is a development of the segment showing a:tabularprinting form mounted thereon` and illustrating the manner inwhich a single line orstrip may beremoved. As thisA igurelindicates itiswell withinthe Aspirit of ythis invention that the strips"- may tbe Emounted on suitable holders which in turn maybexcarriedbya flat "formfor use in vconnection with standardflat bed printing mechanisms. Fig. 8is a perspective of one of the locking members; Fig. 9 is a perspectivelooking at the bottom side of another type of the locking member for theform.

The print-ing device generally comprises as shown in Figs. 1 to 3inclusive, a frame 10, a main shaft 11 journalled therein, and a crank12 for rotating the shaft, a pair of skeleton disks 13 which are securedto the. shaft and are connected together by crossV rods 14. The crank isshown rigidly secured to the shaft 11 and is adapted to drive aY pinion15 which meshes with the gear 16, rigidly,

place on the segment to retain suitable print-V ing strips aswillhereinafter be described. The segment is also provided on itsinterior with transverse webs 23. Y Near the ends of the inner surfaceof the cylindrical wall the segment bears on the rot-ary disks 13 whilethe webs 23 may bear on the cross rods 14. rI he segment may be held inplace by spring hooks 30 pivoted tothe segment by means of a rod31extending across the webs and at its other end springing aroundA theshaft 11.

rlhe end disks 13 of the skeleton drum are shown as carrying a pair ofribbon spools 40 from which an inking ribbon 41 extends y about theprinting form. Such form coacts with a rotary platen 45 which is mountedin the frame 12 and driven through by meansv of the gearing l5 and 16.The machine is accordingly adapted, when the crank is rotated, to printon paper fed between the drum and platen. l

The printing members comprise embossed strips'50 having a single rowofupwardly extending characters 51 thereon and having the edges 52 of thestrips extending away fromrthe embossed surface and inclining inwardlytoward each other. Y

The embossed strips when produced are preferably straight and are madeof a comparatively soft metal such as aluminum and the characters'thereon are accurately posi-- tionedso that the characters of one linemay align with those of` another, when the re- Y spective strips arealigned, which is very v gaged by the down turned `sides 52 of theembossed strips.. The supporting member Lemme has a web 'portion 65which joins the head to a suitable base portion 62 slightly greater inwidth than the printing strip so as to accurately space the strips andthereby the printed lines. The ends of the strip holders or supportingmembers extend somewhat beyond the embossed strip 50 and are cut away atthe top thereof to form suitable lips 63 which' are adapted to beengaged by suitable means mounted on the segment, such as theoverhanging ribs 24.

To .retain the embossed strips and their associated holding members onthe segment I prefer to mount the arcuate members 24 on the segment bymeans of suitable cap screws asat 25. The members 24 have overhanginglips 66 adapted to overlie the ends 63 of the strip holders and retainthe latterI in contact with the outer surface of the segment. YThere maybe a series of these arcuate members 24; as illustrated in Figs. 1 and 7I have shown three such members, in which instance the segment isaccordingly divided thereby into two columns each of which is adapted tocarry a plurality of strip holders and their associated printing strips.

. To retain the strips and their associated holders in position ony thesegment in such a manner as to prevent the shifting of the holders konthe segment I mount at one end of the segment suitable retaining blocks70 each of which lie between two of the arcuate members 24 and extendsubstantially from one memberto the other. The blocks 70 are guidedagainst angular movement on the segment by means of a boss portion 7lwhich is adapted to coact with the arcuate recesses 2O formed in thesegment. To secure the retaining' member 70 in position on the drum Iprefer to employ suitable arcuate wedge blocks 73 adapted to coact withthe dovetailed recesses 21 in the segment. Suitable screws'v 7 5, whichpass freely through openings 7 6 in the member 70, are adapted to coactwith the wedges 73 and draw the latter 'tight against the convergingsides of the arcuate grooves or recesses 21 ofthe segment, therebysecurely clamping the members 70 in position on the drum. It will benoted that, as these members are guided on the segment, they will serveto properly align thev strip holders and theirv associa-ted embossedprint-- ing strips. f

The holders carrying the embossed strips .ng

are then laid in position on the drum much as indicated by the dottedlines. at 60aion Fig.

7 wherein one of the extending. ears 63 of a Vholder 60 has beeninserted beneath the ex'- ears 63 are engaged by the overhangingprojections 66 on the respective members 24.

To permit a comparatively tight t between the portion 63 of the holdersand the retaining member 24 the strip and associated holder may beslightly flexible to permit the unit to conform to the contour of thesegment as the unit is swung into position.

To securely lock a number of printing strips on the segment I providesuitable blocks or locking lugs 80 as illustrated in Fig. 8 which havehead portions 81 adapted to lie on the outer surface of the segment andwhich are lower in height than the printing strip supporting members 60and which are adapted to engage sides 64 of the base of a supportingholder and retain the holder in position against the baseneXt adjacentholder 60 and so on until the block 70 is reached. The locking memberhas a suitable depending portion 82 adapted to coact with verticalportions il@ of the recesses 2l thereby serving to guide the block 8Oagainst angular' displacement on the form. A suitable 'wedge blocl: S3,formed similar to theV block 73 which cooperates with the member "O, isused tor locking the member 8O in position on the segment. Suitablescrews such as illustrated at 85 which pass freely through openings 81";in the members 80 and coact with threaded portions 87 in wedge blocks 83serve to loclr the member 8O and the grooved recesses 21.

The printing strips and their associated holders when assembled on thesegment lie substantially in the position as illustrated by the letthand portion of the segment in Fig. 7. However, when it is desired toremove any one of the individual strips and its associated holder theclamping blocks 80 are slightly loosened from the segment and slid awayfrom the holders to a position indicated at 80a in Fig. 7. It desired,the blocks 8O may be clamped in such position to prevent theirinadvertent displacement. The printing strips between the holders andthe strip which is to be removed from the segment are then shoved intoposition against the blocks 80a, as indicated at 600, one end of thestrip, which is desired to be removed, is then swung till the stripreaches approximately. the position shown by dotted lines at 60?) inFig. 7, in which position the holder 60 has become tree from one of thearcuate retaining members 24. The strip may then be slid laterally,thereby removing the strip from the remaining retaining member 24 andremoving it from the segment. The strip may then be replaced withanother, as heretofore described, or omitted entirely as desired. Theoperator may then move the strips 600 to a position where they contactwith the balance of the strips and replace the blocks 80 in position tohold the strips rigidly against the block 70.

It will be seen from the foregoing descriptionthat I have provided aprinting device which is adapted for use in connection with the printingof forms such as lists and the like, especially where it is desired toaccurately align a plurality of lines in column formations and in whichprintng device any one or more of the individual lines of printingstrips may be removed from the device and changed without necessitatingthe i'emoval or disarrangement of the remaining strips or lines.

v I claim: f 4

l. In a printing device the combination of a long, narrow7 base striphaving an. upwardly extending rigid retaining device thereon, anembossed printing strip shorter than the base strip and having inwardlyprojecting edge flanges whereby the printing strip may be. mount-ed onthe base strip with the ends 'of the base strip extending beyond theprinting strip and an arcuate printing member having parallel arcuateledges overhanging the projecting ends of the base strip but withsuliicient clearance to enable the printing devices to Vbe skewed freefrom the ledges, said ledges forming abutinents for the printing strips.f

2. In a printing device, the combination of an arcuate segment, aplurality of embossed printing character strips, individual holders tosupport said strips, one holder for each strip., means comprisingarcuate members secured to said segment adapted to retain the holders incontact with the outer periphery of said segmentsaid means adapted torestrain theV strips from endwise movement, means associated with saidsegment adapted to retain the holders in contact with each other, bothof said means being adapted to permit the removal of any one of saidholders independently of the remaining holders.

3. In a printing device the combination with a segment having parallelarcuate strips thereon provided with overhanging portions, of aplurality of embossed printing strips having inwardly flanged edges,holders for said strips, said holders having head portions adapted tob-e embraced by the flangededges of said printing strips, portions ofsaid holders adapted to underlie said overhanging portions of saidarcuate strips to retain them in contact with Y the form, while thearcuate strips provide abutments preventing removal of the embossedstrips lengthwise without preventing skewing of the printing devices,and means abutting said holders adapted to retain them in contact witheach other.

4e. In a printing device, the combination of an. arcuate segment, aplurality of embossed rinting character strips, an individual olderassociated with each strip, means extending arcuately on the segmentadapted to retain the holders in contact with the seg- `ment and meansassociated with the segment and abutting the eXtreme holders' to retainthe holders in contact with each other, both of said means lying belowthe printingportions of said embossed strips, said arcuate meanscomprising a pair of parallel stri s spaced apart and radiallyoverhanging t e non-printing bodies of the embossed strips, saidembossed strips being slightly shorter than the distance between thearcuate strips, whereby the latter form abutments preventing materiallongitudinal movement of the embossed strips without preventing skewmgof the printing devices.

5. In a printing device the combination of a stiff arcuate segment, aplurality of embossed printing character bearing strips, an individualholder associated with each strip, which strip overlies and on which itis held by the inward edge iianges of the strip, both said strip andholder being comparatively flexible, means extending arcuately on thesegment adapted to retain the holders in contact with the segment whileallowing their removal by skewing and means to retain the holders incontact with each other.

6. In a printing device the combination of a stiff arcuate support, aplurality of removable elongated iexible printing character bearingmembers adapted to lie parallel to the support axis when in printingposition, means extending arcuately on the support adapted to overliethe ends of the members to retain them in printing position in contactwith the support, such iieXibility permitting the members to `be turnedaskew and warped to conform to the support whereby said members may beindividually assembled onto the support between other membersnotwithstanding the curvature of the support.

In testimony whereof, I hereunto affix my y signature.

CLIFTON oHiSHoLM.

